> On Aug 25, 2017, at 12:34 AM, Howard Lovatt <howard.lov...@gmail.com> wrote:
> 
>  In particular a future that is cancellable is more powerful that the 
> proposed async/await.

It's not more powerful; the features are to some degree disjoint. You can build 
a Future abstraction and then use async/await to sugar code that threads 
computation through futures. Getting back to Jakob's example, someone (maybe 
the Clang importer, maybe Apple's framework developers in an overlay) will 
still need to build infrastructure on top of IBActions and other currently 
ad-hoc signalling mechanisms to integrate them into a more expressive 
coordination framework.

-Joe
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